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Error Code

Thermador Refrigerator E01

E01 typically points to a sensor or control communication fault in the refrigerator.

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Reviewed by Marcus Cole · Last reviewed August 7, 2026

Error guide

Code overview

Marcus Cole Written by Marcus Cole Appliance Repair Content Specialist Published August 1, 2026 Updated August 12, 2026 Technically reviewed August 7, 2026
Error code E01
Appliance Refrigerator
Refrigerator service reference
Quick answer

E01 typically points to a sensor or control communication fault in the refrigerator.

Model compatibility: Thermador reuses codes across series and model years, so E01 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.

Plain language

What this code means

The E01 code generally indicates the refrigerator’s control detected a sensor or communication issue. It is a signal to have the control and sensors evaluated rather than a specific user-fixable step.

Signs

Symptoms you may notice

E01 shown on the display

Temperatures may drift out of range

Controls may respond abnormally

Why it happens

Possible causes

A temperature sensor fault

A control-board communication issue

A wiring or connection problem

Before you call

Safe checks you can make

These are simple, non-hazardous checks only. If anything is unclear, stop and contact a technician.

Confirm the refrigerator has stable power

Check that vents inside are not blocked by items

Note the actual temperatures if you can measure them

Important safety warning. Sealed refrigerant systems and control electronics require professional tools. Avoid internal disassembly and protect food safety if temperatures are drifting.

Please avoid

What not to attempt

  • Do not open sealed refrigerant components
  • Do not access internal control wiring
  • Do not rely on repeated power cycling as a fix
Get help

When to call a technician

If E01 persists and temperatures drift, book a diagnosis so the sensor and control can be evaluated before food safety is affected.

FAQ

Frequently asked questions

References

Sources & references

  • Appliance user manual — troubleshooting indicators
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